Study Finds 31% of Doctors Shun Medicaid (WSJ): Nearly a third of doctors in the U.S. said they wouldn’t accept Medicaid beneficiaries, according to a government study published in the journal Health Affairs on Monday. Results varied by states.

HCA Discloses Federal Probe (WSJ): Prosecutors in Miami are investigating the medical necessity of some cardiac procedures at several of the biggest for-profit U.S. hospital operator’s facilities.

Fresh Target in Hunt for a Migraine Cure (WSJ): Researchers hunting for new treatments for migraines are targeting a brain chemical known as CGRP that appears to play a role in the transmission of pain, but not in other brain functions, such as cognition or mood.

Wrong Call: The Trouble Diagnosing Diabetes (WSJ): Adults suffering from Type 1 diabetes have been diagnosed as having Type 2 diabetes, even though the conditions are different. The problem tends to happen at the offices of primary-care doctors, who aren’t accustomed to seeing the rarer Type 1 diabetes.

Can Weight Training Prevent Diabetes? (Boston Globe): In a study of 32,000 men over nearly two decades, Harvard School of Public Health researchers found weight lifting might work as well as aerobic exercise in warding of Type 2 diabetes.